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 Wysłany: Sob 7:20, 08 Sty 2011 Temat postu: mbt schuhe auslaufmodelle Simulation of wind tunne |
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Simulation of wind tunnel test and a stroke profile characteristics of the flow field near
nicUniversity,[link widoczny dla zalogowanych], Ats243-0297, Japan) Abstract: Inthispaper. windprofilemodelinginthenewboundarylayerwindtunnel (WT) ofWindEngineeringResearchCenter, TokyoPolytechnicsUniversity, Japan, isintroducedbriefly. Basedonthetestresults, windspeedandturbulenceintensityprofilescorrespondingtofourdifferentterraintypesdefinedbyArchitecturalInstituteofJapanhavebeensimulatedsuccessfullywiththewidely-usedspire-roughnesstechnique. Throughcomparativeanalysesofthemeasureddata, effectsofdjfferentblocksandspirescombinationsonthefinalwindprofilesintheWTareinvestigated. Inaddition, sev-eralimpo ~ antproblemsregardingtowindprofilemodelingandthefinalcharacteristicsofthesimulatedapproachflow, in-cludingoptimalshapeofspires, consistencyofpowerspectraldensitydistributionandcalculationmethodsforlengthscales, etc. ,[link widoczny dla zalogowanych], Arediscussed. Finally,[link widoczny dla zalogowanych], Basedonaboveanalysis,[link widoczny dla zalogowanych], someadvicesaboutmodelingwindprofileinaWTandprocess-ingthemeasureddataareEvenforfuturereference. Keywords: boundarylayerwindtunnel; windspeedprofilemodeling; turbulenceintensityprofilemodeling; powerspectraldensity; lengthscalee @ e e solid solid e8e (No. 381 on the pick) and30. , Theoscillationfrequenciesis0.8Hz, 1.47Hz, 2.48Hzand4.41Hz. Thedynamicaerodynamicscharacteristiconpitchingoscillation70 a degdeltawingmodelwithlargeamplitudeathighspeedissimplyanalyzedinthepaper. Thetestre. suitsindicatedthattheaerodynamiclagcharacteristic70 a degdeltawingaredominantrelyontheMachnumber, theampli-tudeandreducedfrequencyofmodelpitchingoscillation. Keywords: windtunneltest; dynamicstall; largeamplitude; pitching; unsteadyaerodynamic
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